Answer :
Final answer:
Walls in SCIFs must indeed extend from true floor to true ceiling to secure sensitive information. High-voltage power lines are held by insulators but are not wrapped in insulating material, making the related statement false. The center of mass of a continuous object can be located outside the actual material, also rendering that statement false.
Explanation:
The statement that walls in SCIFs must extend from true floor to true ceiling is indeed True. Sensitive Compartmented Information Facilities (SCIFs) are designed to prevent sensitive information from being accessed or intercepted from outside. This design includes complete enclosure with walls that do extend from the structural floor to the structural ceiling.
Regarding the high-voltage wires question, the statement is False. High-voltage wires are not wrapped in insulating material; they are bare and held aloft by insulators to prevent the current from grounding. These insulating connectors are typically made of materials like ceramic or glass.
Finally, regarding the center of mass question, the statement is False. The center of mass of a continuous object does not always have to be located within the material of the object. It is the average location of all the mass in the object and can be outside the actual material, especially in objects with unusual shapes or mass distributions.
